Re: [Zope] ZEO Strange Session KeyError When Load Balanced
Michael, I'll take a look at the Transience product. We have tried using FileStorage but to the same effect unfortunately. I'll let y'all know how it works. -Jason On Sat, 12 Feb 2005 15:37:23 +1300, Michael Dunstan <michael@elyt.com> wrote:
Hi Jason,
It'd be worth checking that the clocks on your ZEO clients are somewhat consistent.
Alternatives that might be worth exploring:
- Disable inband housekeeping. And use a single ZEO client to run the housekeeping. (See Products/Transience/Transience.py)
- Try with no session expiration. (Data object timeout value of 0). That's unlikely to be mode you want to operate in I suspect. But it might be a useful trouble shooting step.
- Use FileStorage rather than TemporaryStorage for the session store on the ZEO server. Obviously you'd need to pack that from time to time.
Michael.
On 11/02/2005, at 8:06, Jason J. W. Williams wrote:
Chris,
Here's the traceback. Thanks.
-Jason
Time 2005/02/10 19:02:49.068 GMT User Name (User Id) williamsjj@testsite.com (williamsjj@testsite.com) Request URL https://portal.testsite.com/index_html Exception Type KeyError Exception Value 1108062160
Traceback (innermost last):
* Module ZPublisher.Publish, line 101, in publish * Module ZPublisher.mapply, line 88, in mapply * Module ZPublisher.Publish, line 39, in call_object * Module Shared.DC.Scripts.Bindings, line 306, in __call__ * Module Shared.DC.Scripts.Bindings, line 343, in _bindAndExec * Module Products.PageTemplates.ZopePageTemplate, line 222, in _exec * Module Products.PageTemplates.PageTemplate, line 96, in pt_render <ZopePageTemplate at /Artemis/index_html> * Module TAL.TALInterpreter, line 190, in __call__ * Module TAL.TALInterpreter, line 234, in interpret * Module TAL.TALInterpreter, line 637, in do_condition * Module TAL.TALInterpreter, line 234, in interpret * Module TAL.TALInterpreter, line 484, in do_insertText_tal * Module Products.PageTemplates.TALES, line 227, in evaluateText * Module Products.PageTemplates.TALES, line 221, in evaluate URL: /Artemis/index_html Line 62, Column 6 Expression: <PythonExpr here.set_sorting('date','desc')> Names:
{'container': <Folder instance at 415a0c80>, 'context': <Folder instance at 415a0c80>, 'default': <Products.PageTemplates.TALES.Default instance at 0x40e824ac>, 'here': <Folder instance at 415a0c80>, 'loop': <SafeMapping instance at 413679f0>, 'modules': <Products.PageTemplates.ZRPythonExpr._SecureModuleImporter instance at 0x40e8238c>, 'nothing': None, 'options': {'args': ()}, 'repeat': <SafeMapping instance at 413679f0>, 'request': <HTTPRequest, URL=https://portal.testsite.com/index_html>, 'root': <Application instance at 41591dd0>, 'template': <ZopePageTemplate at /Artemis/index_html>, 'traverse_subpath': [], 'user': williamsjj@testsite.com}
* Module Products.PageTemplates.ZRPythonExpr, line 47, in __call__ __traceback_info__: here.set_sorting('date','desc') * Module Python expression "here.set_sorting('date','desc')", line 1, in <expression> * Module Shared.DC.Scripts.Bindings, line 306, in __call__ * Module Shared.DC.Scripts.Bindings, line 343, in _bindAndExec * Module Products.PythonScripts.PythonScript, line 323, in _exec * Module None, line 9, in set_sorting <PythonScript at /Artemis/set_sorting> Line 9 * Module ZPublisher.HTTPRequest, line 1218, in __getattr__ * Module ZPublisher.HTTPRequest, line 1178, in get * Module Products.Sessions.SessionDataManager, line 94, in getSessionData * Module Products.Sessions.SessionDataManager, line 181, in _getSessionDataObject * Module Products.Transience.Transience, line 843, in new_or_existing * Module Products.Transience.Transience, line 446, in __setitem__
KeyError: 1108062160
Display traceback as text
REQUEST form __ac_persistent '1' came_from 'https://portal.testsite.com/index_html' submit 'Sign In' cookies _ZopeId '01406898A1sl9qU3LHc' lazy items SESSION <bound method SessionDataManager.getSessionData of <SessionDataManager instance at 415a0b00>> other __ac_persistent '1' TraversalRequestNameStack [] AUTHENTICATED_USER williamsjj@testsite.com URL 'https://portal.testsite.com/index_html' VirtualRootPhysicalPath ('', 'Artemis') VIRTUAL_URL 'https://portal.testsite.com/index_html' SERVER_URL 'https://portal.testsite.com' AUTHENTICATION_PATH 'Artemis/VirtualHostMonster//' traverse_subpath [] PUBLISHED <ZopePageTemplate at /Artemis/index_html> came_from 'https://portal.testsite.com/index_html' ACTUAL_URL 'https://portal.testsite.com/index_html' VIRTUAL_URL_PARTS ('https://portal.testsite.com', 'index_html') URL0 https://portal.testsite.com/index_html URL1 https://portal.testsite.com BASE0 https://portal.testsite.com BASE1 https://portal.testsite.com BASE2 https://portal.testsite.com/index_html environ HTTP_MAX_FORWARDS '10' HTTP_REFERER 'https://portal.testsite.com/login/login_form?came_from=https%3A// portal.testsite.com/index_html&retry=&disable_cookie_login__=1' HTTP_ACCEPT_LANGUAGE 'en-us,en;q=0.5' SERVER_SOFTWARE 'Zope/(Zope 2.7.4-0, python 2.3.3, linux2) ZServer/1.1' SCRIPT_NAME '' REQUEST_METHOD 'POST' PATH_INFO '/VirtualHostBase/https/portal.testsite.com:443/Artemis/ VirtualHostRoot/index_html' SERVER_PROTOCOL 'HTTP/1.1' channel.creation_time 1108062158 HTTP_X_FORWARDED_SERVER 'portal.testsite.com' CONTENT_LENGTH '144' HTTP_ACCEPT_CHARSET 'ISO-8859-1,utf-8;q=0.7,*;q=0.7' HTTP_USER_AGENT 'Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7) Gecko/20040707 Firefox/0.9.2' HTTP_COOKIE '_ZopeId="01406898A1sl9qU3LHc"' SERVER_NAME 'portal1.testsite.com' REMOTE_ADDR '127.0.0.1' HTTP_VIA '1.1 portal.testsite.com' PATH_TRANSLATED '/VirtualHostBase/https/portal.testsite.com:443/Artemis/ VirtualHostRoot/index_html' SERVER_PORT '8080' HTTP_HOST 'localhost:8080' HTTP_ACCEPT 'text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/ plain;q=0.8,image/png,*/*;q=0.5' GATEWAY_INTERFACE 'CGI/1.1' HTTP_X_FORWARDED_FOR '66.213.154.102' HTTP_X_FORWARDED_HOST 'portal.testsite.com' CONTENT_TYPE 'application/x-www-form-urlencoded' HTTP_ACCEPT_ENCODING 'gzip,deflate'
On Thu, 10 Feb 2005 13:46:34 -0500, Chris McDonough <chrism@plope.com> wrote:
Hi Jason,
Please keep the discussion on the list, thanks...
No, there are no other products that need to be updated. At this point, we'll need to see a full traceback (see the "error_log" object) to figure out what's happening.
On Thu, 2005-02-10 at 13:44, Jason J. W. Williams wrote:
Yes I am. I was using 2.7.2 when the issue cropped up so I upgraded both ZEO clients and the ZEO server to 2.7.4 last night. Same problem occurs. Are there any products that need to be upgraded outside of Zope? Thank you!
-Jason
On Thu, 10 Feb 2005 13:27:31 -0500, Chris McDonough <chrism@plope.com> wrote:
Hi Jason,
Coding errors causing this symptom were present in Zopes before 2.7.3 but none have been reported to my knowledge thereafter. Are you still having this issue with 2.7.4?
On Thu, 2005-02-10 at 11:44, Jason J. W. Williams wrote:
Hello,
I hope this is the correct place to post this question as I have not been able to resolve the problem via archives or Google. We have a setup with one ZEO server and two ZEO clients. The goal is to put a load balancer in front of the two clients and have them both operate off the same session data so that it appears as a single server to the end user. We setup the clients according to: http://longsleep.org/howto/sharesessionwithzeo
However, when we run the setup whenever ZEO client 1 is hit for a page a KeyError is generated. I assume this is because ZEO client 2 set up the session and the data is not being shared. I upgraded us to Zope 2.7.4 last night in an attempt to fix the problem. Any help is greatly appreciated. Thank you in advance.
Best Regards, Jason _______________________________________________ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
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Jason J. W. Williams